The 8 Best Nest Doorbell transformers (2023 reviews)

The maxdot nest doorbell transformer's high-end materials makes sure that it ages well with use. This 24v transformer fits for nest, ecobee, honeywell and sensi smart thermostats. It comes with typical wiring so there isn't any polarity. If you are using it for a Video doorbell or security camera, it should be sufficient. The earlier model outputs a 720p video image while the second-generation doorbell provides 1080p. It is AC so there isn't any polarity.

There are other transformers that have multiple input voltages, 240V, 208V and 120V. It is an easy installation and comes with a locknut that firmly anchors the transformer to the breaker box.

Why We Like This:

Perfect solution for thermostat and doorbell
Drives the door bell and ring pro without issues
Screws are easy to loose and tight
Colour-coded wires makes it super easy

Best For Wired Doorbell: Fatkitt Nest Doorbell Transformer

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Next on the list, we've got yet another transformer that manages to win our hearts. It's the fatkitt nest doorbell transformer and it's widely considered as transformer that has the most suitable features. Fatkitt doorbell power adapter can adapt doorbells and other devices that require a constant 18 volt power supply to operate so that you can safely charge the device. It is great to power that ring 4 doorbell. It is compatible with nest hello video doorbell arlo video doorbell eufy video doorbell simplisafe video doorbell skybell doorbell zmodo smart greet wi-fi video doorbellnote. It is convenient to drill a 3/4 in. It comes with a long enough cord for easy placement.

It is easy to hook up, and works like a charm. It works with wyze doorbell to add to that it is best bang for the buck. This is a transformer and only to provide power for your selected 18v device.

Why We Like This:

Super easy to install and worked great
Works on an arlo wired doorbell
New and hot release

Best For humidifier: Hotop Nest Doorbell Transformer

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The hotop nest doorbell transformer should be able to handle its purpose and duties with ease. It takes up more than its share of real estate. It is big, bulky and heavy and it gets the job done. This works for replacing a 24v power brick on a Honeywell furnace mounted humidifier. The device is heavy but has a hole to screw into the electrical outlet. It is easy to install and gives a stronger 24v current to the device. It's just an AC transformer in a nice package.

This unit has studs right on it. It is just an AC transformer in a nice package.

Why We Like This:

Excellent high quality plastic unit with green "power on" led
Very well built and powerful enough to keep doorbell at full charge
Perfect for powering the ecobee3 lite
Works great as replacement for toro 24v sprinkler transformer

Best For C Wire thermo Power: VIIVRIA Nest Doorbell Transformer

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The viivria nest doorbell transformer is suitable and reliable and fits well with your daily usage. There is no voltage requirement for the Ring 3 that is beyond that of the Ring. It does a perfect job of completing a circuit with itself, ie, connecting it to C as well as Rc/Rh will create a wonderful enclosed circuit and will indeed power up the thermostat. This works well with the Logitech view doorbell. The tinned ends screw right into the back of the unit and it runs just warm. It eliminates the need for a c-wire.

This is a device that you can keep your machine continuously charging your doorbells or thermostats.

Why We Like This:

Works great with a 2 wire gas heater
Plenty long cord and nicely tinned ends made it easy to install
Good investment for long term

Best For both Simplisafe Doorbell cams: Ragnaros Nest Doorbell Transformer

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Next on the list, we've got yet another transformer that manages to win our hearts. It's the ragnaros nest doorbell transformer and it's widely considered as one of the best convenient transformer you can buy. The Ring 2 is for people with either a low powered transformer (requiring physical charging every few months with included cable) or with no transformer nearby to hook up to. It provides 18 volts of DC power at the chime and doorbell button. It is mounted on the OUTside of the circuit box. It generates very little heat. It is suitable for hello and ring cameras.

It is easy to install, and all wires are color coded as they should be. There is a solid and loud "ding dong" that is easily heard from almost anywhere in the house.

Why We Like This:

Attached easily to the junction box and is very stable without mounting screws
Works great with ring doorbell and ring chime
Worked well to power existing bell and two nest door bell cameras

Best Quality Transformer: Cinchdone Nest Doorbell Transformer

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This doorbell transformer works great with the adt video doorbell and is very easy to install. It is needed for the installation of two ring pro 2 video doorbells. It is compatible with ring video doorbell, ring video doorbell 2, ring video doorbell pro, nest skybell doorbell, and other devices that require constant 24 volt power for operation. This 24v transformer fits for nest, ecobee, honeywell and sensi smart thermostats.

This transformer puts out enough steady power to easily power two ring pro 2 video doorbells. The original transformer is bushing-mounted in a side knockout on a surface mounted junction box. This new transformer is of greater width, meaning the surface-mounted junction box has to be shimmed slightly off the mounting surface to allow the transformer to be secured. It’s a simple low voltage swap and your video doorbell will be able to work.

Why We Like This:

Easy to install without a doorbell
Great upgrade to power doorbell cameras
Delivers what they promise

Best For powered Wifi device: BOJACK Nest Doorbell Transformer

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The bojack nest doorbell transformer is satisfactory and appropriate and fits well with your daily purpose. This is a basic 24 v dc transformer that mounts to a solid surface or junction box. It works best because of the voltage drop on long distances. It also works well for HVAC applications, such as thermostats and zone panels. It is compatible with ring video doorbell, ring video doorbell 2, ring video doorbell pro, nest skybell doorbell, and other devices that require constant 24 volt power for operation.

This transformer does consume about 4.5 watts when idle. It will be using energy as long as it's powered on. This product is a great solution because it easily and affordably replaces most standard transformers. It is a good transformer for a powered wifi device.

Why We Like This:

Easy to install and was a great replacement for the old transformer
Installation is simple and can be done within a matter of minutes
Lot of satisfied buyers

Best With Video Doorbell: Feekoon Nest Doorbell Transformer

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We would, of course, be remiss if we didn't mention feekoon nest doorbell transformer for regular usage. It is great with a video doorbell. It will source a pair of Ring doorbells and the existing doorbell's chime. It has design for circuit protection, to avoid damage to the components in the circuit.

Why We Like This:

Worked with eufy battery power doorbell without original chime
Good replacement for older tech, good for running a pair of ring doorbell cameras
Auto resetting, with led green power indicator, positive/ negative/ screw terminals